Headlight



Feb. 12 192%.

' 1,483,070 F. BUCHANAN HEADLIGHT Filed 27, 1919 A TTORNEY5.

\ from the rear Patented Felo. 12, 1924.

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FRANK BUCHANAN, OF SYRACUSE, NEW YORK.

HEADLIGHT.

Application filed August 27, .1919. Serial No. 320,082.

citizen of the United States, and a resident of Syracuse, in the countyof Onondaga and State of New York, have invented a certain new anduseful Headlight, of which the following is a specification.

This invention has for its object a particularly simple andeflicientmeans for adjusting the lamps of electric headlights and the like,axially of the focal axis of the reflector or lens of the lamp. Theinvention consists in the novel features and in the combinations andconstructions hereinafter set forth and claimed.

In describing this invention, reference is had'to the accompanyingdrawings in which like characters designate corresponding parts in allthe views. v

Figure 1 is a side elevation, partly in section of a headlight embodyingmy invention.

Figure 2 is a detail view of the means for transmitting the movement ofthe operating member to the lamp socket support.

Figure 3 is a fragmentary sectional view taken on the plane of line 3-3,Fig. 1.

This headlight comprises, generally, a casing in which is mounted areflector, a lamp carried in a socket which is mounted upon a supportadjustable along the focal axis of the reflector along guides supportedby the casing, and means for adjusting the support including anoperating member carried by one of the side walls of the casing asdistinguished from the rear wall.

1 designates the casing, it being here shown as bell shape having a flatrear wall 2 integral with the annular wall. 3 is a door higned in anysuitable manner to the front end of the casing and carrying a suitablelens 4. 5 is a parabolic reflector mounted within the casing.

6 is the lamp extending into the reflector through the rear sidethereof. and arranged with its light producing or incandescent elementin the focal axis.

7 is the lamp socket in which the lamp 6 is supported, the lamp socketbeing mounted upon a suitable support 8 movable along a pair of guiderods or posts 9 projecting wall 2, these rods 9 being spaced apart fromthe focal axis of the reflector on diammetrically opposite sides 5thereof.

10 is the operating member which extends through a side wall, that is,the annular wall of the casing and is exposed on the outer side of saidwall so as to be easily accessible to adjust the lamp along the focalaxis of the reflector and position the incandescent element as near aspossible to the focal point of the reflector or other light deflectingmeans.

The operating member is here shown as a screw extending through thecicruinferential wall of the casing and held from endwise and lateralmovements relatively thereto and coacting at its inner end with powertransmitting means connected to the lamp socket support 8.

As here shown, this power transmitting means comprises an angle or hellcrank lever 11 pivoted at 12 at its angle to a bracket 13 mounted on therear wall 2 of the casing, one arm of the lever coacting with thesupport and the other arm being connected to the screw. As hereillustrated, the former arm is formed with a slot 14 to receive atransverse pin or rod 15 at the rear end of the support about midwaybetween the guide rods 9, and the latter arm is formed with a slot 16for receiving a pin 17 on the block 18 into which the operating screwthreads.

During the movement of the operating screw the block 18 must moverectilinearly upwardly or downwardly as the only movement of the screw10 is a rotary one and the motion thereof is transferred through thebell crank lever 11 to the lamp socket support 8 to shift thelampinwardly or outwardly.

The support is provided with suitable bearings 19on the guide rods.

Each bearing 19, which per se forms no part of this invention, comprisesgenerally, a spring pressed carrier 20 carrying rollers 21 engaging therod 9 in front and in the rear of a stem 22 on which the carrier 20 isslidable toward and from the rod. This stem is here shown as a screwthreading into a collar 23 loosely encircling the rod 9 and rising froma base plate 2 1 provided on the support 8 for the lamp socket 7. Thespring 25 encircles the stem or screw between the head thereof and theupper face of the carmen This lamp adjustment is particularlyadvantageous in that the lamp can be readily adjusted relatively to thefocal of the reflector at any time without removal of the headlight.

What I claim is: y

1. A headlight comprising a casing, a concave reflector in the casing, aguide carried by the rear Wall of the casing in the rear of thereflector, a lamp socket support mounted on the guide and movablethereon axially of the reflector, means for shifting the support alongthe guide comprising an angle lever carried by the casing and having onearm thereof connected to the support sub stantially centrally thereof inthe axial line of the lamp socket, and an operating member connected tothe other arm of the lever and arranged at an angle to the axis of thesup port and extending through a peripheral Wall of the casing,substantially as and for the purpose specified.

2. A headlight comprising a casing, a lamp socket support mounted in thecasing and adjustable axially, a guide for the lamp socket supportincluding a pair of parallel rods, and means for moving the lamp socketsupport along the rods comprising an op erating member carried by thecasing and having a head exposed on the outside thereof, said memberbeing arranged at an angle to the direction of movement of the support,and an angle lever pivoted at its angle to the casing, one arm of thelever coacting With the support midway between the rods and the otherarm having means coacting With the operating member, substantially asand for the purpose described.

In testimony whereof, I have hereunto signed my name, at Syracuse, inthe county of Onondaga, and State of New York, this 17th day of July, 7FRANK BUCHANAN.

